Packing cord, beading cord, edge roll, or the like



W. S. COOK June 19, 1951 PACKING CORD, BEADING CORD, EDGE ROLL OR THELIKE Filed Aug. 19, 1948 INVENTOR. [fay/7e 6: ('a /f @mgm Patented June19, 1951 PACKING .zCGRrD; "BEADI-NG CORD, lEDGE ROLL, OR THE LIKE -WayneS. Cook, Grand Rapids,"Mieh., assig-norto Sackner-Products, Inc.,acorp'ora'tion of Michigan Application August 19, 1948,. Serial No.45,123

1 This invention relates to improvements in packing cord, beadingcord,-edge rollor the like.

The main objects of this invention are: First, to provide a packingcord, beadingcord, edge roll or the like which has relatively hightensile strength, is uniform in dimensions, has a smooth exterior andmaybe economically pro-' duced.

Second, to provide a structure of this character which may"beproduced'with minimum waste material.

Further objects relating to detailsand economies of the inventionwillappear from the description to follow. The invention ispoint'ed outin the claims.

A preferred'embodiment of the invention is illustrated in theaccompanying drawings, in which:

Fig. 1 is an enlarged fragmentary view of a packing cord or beading cordembodying my "invention the parts being'-"shown'mainly in conventional'form.

Fig. 2 is a-cross sectional-View.

Fig. 3 is a fragmentary view illustrating "a fragment of a strip ofcreped cellulose tissue employed in the forming ofthe bodyportion of thestructure.

Fig. 4 is'a conventionalized and enlarged section of a wrappingstrandelement of my invention.

In the accompanying drawing the parts are shown in conventionalized formowing to the difiiculti in illustrating 'inproper -proportions. Theproduct or material o'f'myinvention' is variously designated aspacking'cords, beading cords, edge rolls and the like, depending'upo'ntheparticular use to which it is to be put.

While structures embodying-"my invention are particularly desirablewhenused as packing cords or beading cords it should be understood thatmy invention may be embodied in materials for various uses. A structureof the generalcharacter of my invention is illustrated inthe SacknerPatent No. 1,821,582, issued September "1, 1931. That patent discloses'cords made up 'of'layers'o'f creped sheets or cellulose'wadding ortissue paper compressed into cylindrical forms 'andretained by braidedwrapping threads or yarn of cotton.

In the commercialprac'tice of my. invention I form an elongated body I,usually o'f'cylindrical section, from a strip "orstripsof" tissue'2"which is desirably creped and whichiscrumpled transversely andcompressed without twistingintoth'e body. Whether one or morestripsare'employe'd depends on the diameter'of the body desired. In

the preferred embodiment of my invention the body is formed of one ormore strips of creped tissue which are compressed and crumpled edgewise,-as is indicated in the- Fig. 3, to form' the body I which can beproduced of uniform cross section owing to the fact that the strips ofthe desired width can be employed and are crumpled and compressed"to'make up the body.

The'body is bound into its formed-shape by wrappingstrandst which arebraided thereon in open mesh, closely embracing relationflthe strandsbeing partially 'imbedded in the body. 'These strands are in theembodiment illustrated oi flattened cross section and consist of glassfiber filaments formed into the strand and impregnated and coated withwax preferably microcrystalline. The coating may be a mixture of amicrocrystalline wax and'a mineral oil. Microcrystalline wax as commonlyknown in commerce refers only to those waxes usually derived frompetroleum which are not brittle or coarsely crystailline, but which areactually microcrystalline and ductile or nonbrittle. Mineral oil may bedefined as any oil of mineral origin as petroleum orshale oil or any oilobtained from them by refining. "I'he Wax coats-and binds the glassfiber filaments together and provides a substantially smooth coating forthe "strand. This results in astrand having a much greater tensilestrength than thread or yarn and also results in a packing or beadingcord or edge roll having a very smooth exterior and one of a tensilestrength greatly exceeding that-of the packing cord of the Sacknerpatent referred-to the increase in tensile strength, particularly in thesmaller cords or headings, being as high as'75%.

'-A further advantage of the invention is that this superior product maybe produced at a reduction in the cost of the Wrapping strand ascompared to the thread or yarn heretofore used.

Further advantages result from the fact that the strands slide freelythrough the guides or eyes of the braidingmachine and there is noaccumulation of lint. Thestrands maybe applied successfullywith-aconsiderablygreater'tension than is possible with'th'e cotton cordor-strands'commonly used. At the same time, the structure is flexibleand resilient. The wrapping strands are not .materially weakened whenwet and the stretchability is not. increased by wetting. While it is notordinarily contemplatedthat thesepacking cords, beading cords, edgerolls and the-like s'hould'be subjected to any considerable amount ofmoisture somewhat they are sometimesused in conditions where parts maybecome wetand they are affected by humidity conditions and changes.Impregnation and coating the strands with microcrystalline wax isadvantageous over ordinary wax or parafiin in that it permitssubstantial bending and fiexing of the strands under substantial tensionwithout fraying or separation of the glass fibers, particularly at theends thereof, such fraying or separation of the fibers tending to weakenthe strands. It holds the fibers of the strands together duringproduction operations, especially where breaks may occur and adapts thecord braided therewith to a wide variety of uses particularly whensubject to severe bending or flexing stresses over a considerable periodof time. Coating and impregnating the glass strands with the microcrystalline wax, also desirably combines lubrication for passage of thestrands through the braider and provides tacki ness to hold the yarn onthe braider cops and on the final product.

The increased tensile strength of the product permits its being morereadily applied and even when undue stress is applied such stress iseffectively resisted and it does not objectionably vary the diameter.Rupturing of the body material is minimized owing to the protectionafforded by the wrapping or winding strands. After the cord is formed asdescribed it may be shaped into flattened or oval or other cross sectionand maintains the shape into which it formed.

I would again point out that the drawings are mainly conventionalizedand illustrate a practical embodiment of my invention. A structure ofthe dimension illustrated in Fig. 1 might be used for an edge roll forupholstery and the like. My invention, however, is of particular valuewhen embodied in the smaller packing and edging cords which are producedin large quantities ranging from 1%" to /2" although there is largeproduction in cords of other diameters. It will be understood that theillustrations are not intended to be in proper proportions either as tothe material constituting the body or the fiber glass filaments of thewrapping strand. Instead of using individual strips or sheets of crepedtissue the cellulose wadding may be used, this consisting of a pluralityof sheets of'very thin cellulose tissue more or less interlocked bysuperimposing one upon another.

It is desired to emphasize that the packing cords, beading cords and thelike of this invention have a very smooth surface inasmuch as therelatively fine strands permit braiding with such tension that they aresubstantially imbedded in the body material of the cord. At

the same time, the thread or strand results in a very strong cord or thelike. Cotton and other cords commonly used do not become substantiallyimbedded into the filler or body material and this results in a roughsurface particularly where the threads cross each other.

In the applicants structure the surface is, as stated, substantiallysmooth throughout. The additional smoothness and additional tensilestrength permits the cord material to be pulled easily through a weldedseam or the like. Also the applicants strand is very much less thancotton cords and other strands heretofore used in various relations. Thesmooth surface has a very decided advantage when the cord is used inconnection with sheer or thin materials and it permits plastic coatingsand coverings in various embodiments of the cord. This is not practicalwhere cotton threads or cords are used 4 as the coating with plasticwould result in a rough and uneven surface.

The strands may be formed of strands or yarn commercially known asFiberglas. I desire to point out, however, that the Fiberglas strandswithout being impregnated and coated with the wax as I have described donot produce a product comparable with the product of my invention.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent is:

1. An article of manufacture of the class described, consisting of astrip of creped cellulose tissue crumpled transversely and compressedwithout twisting into an elongated substantially cylindrical resilientbody, and glass fiber strands Wrapped around the compressed cellulosetissue and braided into open mesh closely embracing relation thereto,each strand being composed of a plurality of glass fibers, the strandsbeing impregnated and coated with microcrystalline wax, said strandsbeing embedded in the cellulose tissue to provide a smooth surface, saidstrands being relatively fine and of substantial tensile strength tofacilitate wrapping thereof under substantial tension around thecellulose tissue and the embedding thereof in the cellulose tissue.

2. An article of manufacture of the class described, consisting of astrip of creped cellulose tissue crumpled transversely and compressedinto an elongated substantially cylindrical resilient body, and glassfiber strands wrapped around the compressed cellulose tissue and braidedinto open mesh substantially imbedded relation thereto to provide asmooth surface, each strand being composed of a plurality of glassfibers, the strands being impregnated and coated with microcrystallinewax.

3. A packing cord, beading cord, edge roll or the like, comprisingcreped cellulose tissue crumpled edgewise and compressed into anelongated body of substantial resilience and uniform section and awrapping of glass fiber strands of flattened cross section braided inopen mesh thereon, each strand being composed of a plurality of glassfibers, the strands being impregnated with microcrystalline wax fiexiblybinding the fiber glass filaments together and coating the strand, saidstrands being embedded in the cellulose tissue to provide a smoothsurface, said strands being relatively fine and of substantial tensilestrength to facilitate wrapping thereof under substantial tension aroundthe cellulose tissue and the embedding thereof in the cellulose tissue.

4. A packing cord, beading cord, edge roll or the like comprisingcellulose tissue crumpled and compressed into an elongated body ofsubstantially uniform section and of substantial resilience and abraided wrapping therefor of strand each of glass fibers, said strandsbeing impregnated with a microcrystalline wax and a mineral oil, saidstrands being embedded in the cellulose tissue to provide a moothsurface, said strands being relatively fine and of substantial tensilestrength.

5. A packing cord, edge roll or the like comprising cellulose fibermaterial conformed into an elongated body of substantial resilience anda uniform section and a wrapping of glass fiber strands braided thereon,each strand being composed of a plurality of glass fibers, the strandsbeing of flattened cross section and impregnated and coated with wax,said strands being disposed strands of flattened section and of glassfiberwrapped around the compressed tissue and impregnated and coatedwith wax and braided thereon in open mesh with the strands in closelyembracing form retaining relation thereto, said wax facilitatingconforming and retaining said strands to flattened section.

WAYNE S. COOK.

6 REFERENCES 'crrnn The following references are of record in the fileof this patent:

UNITED STATES PATENTS Number Name Date 1,821,582 Sackner Sept. 1, 19312,107,467 Buhler Feb. 8, 1938 2,272,588 Simison Feb. 10, 1942 2,344,181Stone Mar. 14, 1944 2,393,530 Harris Jan. 22, 1946

